ST STM32F7308-DK - Reset Sources; Audio

UM2469 Rev 1 19/59
UM2469 Hardware layout and configuration
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7.7 Reset sources
The reset signal of the STM32F7308-DK board is active low and the reset sources include:
• Reset button B2
• Arduino Uno V3 shield board from CN12
• Embedded ST-LINK/V2-1
7.8 Audio
An audio codec WM8994ECS/R from CIRRUS with 4 DACs and 2ADCs is connected to SAI
interface of STM32F730I8K6. It communicates with STM32F730I8K6 via I
2
C bus:
• The analog line input is connected to ADC of WM8994ECS/R through blue audio jack
CN4
• The analog line output is connected to DAC of WM8994ECS/R via green audio jack
CN5
• Two external speakers can be connected to WM8994ECS/R via CN10 for left speaker
and CN7 for right speaker
• Four digital microphones (ST-MEMS microphone) MP34DT01TR are on the
STM32F7308-DK board. They are connected to input digital microphones of
WM8994ECS/R